Comment empêcher le démarrage automatique de nginx à l'installation ?

J'essaie d'installer Nginx sur Ubuntu 16.04 via la commande suivante : sudo apt-get install nginx

Mais j'obtiens l'erreur suivante :

Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details.
invoke-rc.d: initscript nginx, action "start" failed.
 nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Tue 2017-07-11 16:41:31 UTC; 6ms ago
  Process: 17851 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)
 Main PID: 31524 (code=exited, status=0/SUCCESS)

Jul 11 16:41:31 vm systemd[1]: Starting A high performance web server and a reverse proxy s...r...
Jul 11 16:41:31 vm nginx[17851]: nginx: [emerg] open() "/etc/nginx/nginx.conf" failed (2: N...ory)
Jul 11 16:41:31 vm nginx[17851]: nginx: configuration file /etc/nginx/nginx.conf test failed
Jul 11 16:41:31 vm systemd[1]: nginx.service: Control process exited, code=exited status=1
Jul 11 16:41:31 vm systemd[1]: Failed to start A high performance web server and a reverse ...ver.
Jul 11 16:41:31 vm systemd[1]: nginx.service: Unit entered failed state.
Jul 11 16:41:31 vm systemd[1]: nginx.service: Failed with result 'exit-code'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package nginx-core (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of nginx:
 nginx depends on nginx-core (>= 1.10.3-0ubuntu0.16.04.1) | nginx-full (>= 1.10.3-0ubuntu0.16.04.1) | nginx-light (>= 1.10.3-0ubuntu0.16.04.1) | nginx-extras (>= 1.10.3-0ubuntu0.16.04.1); however:
  Package nginx-core is not configured yet.
  Package nginx-full is not installed.
  Package nginx-light is not installed.
  Package nginx-extras is not installed.
 nginx depends on nginx-core (<< 1.10.3-0ubuntu0.16.04.1.1~) | nginx-full (<< 1.10.3-0ubuntu0.16.04.1.1~) | nginx-light (<< 1.10.3-0ubuntu0.16.04.1.1~) | nginx-extras (<< 1.10.3-0ubuntu0.16.04.1.1~); however:
  Package nginx-core is not configured yet.
  Package nginx-full is not installed.
  Package nginx-light is not installed.
  Package nginx-extras is not installed.

dpkg: error processing package nginx (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
  Errors were encountered while processing:
 nginx-core
 nginx

Je pense qu'il essaie de démarrer nginx automatiquement par défaut après l'installation, mais ne trouve pas les fichiers de configuration de nginx. Comment puis-je l'empêcher de démarrer automatiquement juste après l'installation, de sorte que mes fichiers de configuration de nginx ne puissent pas être trouvés ? apt-get install n'échoue pas.